Plane for aeroplanes.



J. s. LANG. PLANE FOR AEROPLANES. APPLICATION FILED FEB.2, 1912v Patented May 12, 1914.

JAMES s, Lane, on BOSTON, MASSACHUSETTS.

ELAINE FOR AEROBLANES,

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Specification of Letters liatent.

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Application filed February 2, 1912. Serial No. 67%,988.

To all whom it may concern Be it known that I, James S. LANG, of Boston, in the county of Suffolk and State of Massachusetts, a citizen of the United States, have invented a new and useful Iniprovement in Planes for Aeroplanes, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part of this specification, in explaining its nature.

My invention relatesto an improvement in planes for aeroplanes.

The object of my invention is to increase the lifting efficiency of the plane.

A plane embodying my invention can best be seen and understood by reference to the drawing, in which Figure 1 shows the plane in perspective. Fig. 2 is a section on the line 2-2 of Fig". 1.

Referring to the drawings :1 represents the body of the plane presenting; a bottom lifting surface 9.

3 is the front or entering edge of the plane and at the rear edge thereof.

The plane in the fore part of the body 1 thereof is provided with a raised portion 5 presenting a concave top surface 6 ha ng a general upward and backward inclination with relation to the entering edge 3 of the plane and from which it preferably extends. The disposition and arrangement of the surface (i is, in other words, such that air striking this surface during the operation of the plane will be impelled upwardly to produ e a rarefication of air above the body of the plane lying back of said surface.

in so far as the construction of a plane embodying my invention is concerned, it may be constructed in a variety of ways and accordingly may he applied to any type of plane. According to the construction shown the body of the plane is constructed of ribs 7 and 8, respectively, 7 representing the latorallyciztcmling ribs which make the front I and rear edges of the plane and 8 the crossconnecting ribs which form the sides and Mn terinediatc reinforcing portions ol. the body may be stretched or laid a covering of any suitable material the face of ich makes the bottom surface 2 of the pla The concave surface 6 of the pl.- e is made according; to the construction by sets of combined ribs 9 and it], 1 tii'ely, each set of ribs nice-ting in. an apex above the body of the plane and just back of the ribs 7 forming the front entering edge thereof. From the points of their ape the ribs extend in the manner of trusses to con nect respectively with the r bs 7 at the front and rear edges of the plane. The ribs 9 and 10 are supported and braced by laterally-extending; bars 11 interposed between them and the ribs 8 of the body of the plane. The ribs 9 are preferably concave presenting a center on centers-of curvature lying above the body of the plane. Over the ribs 9 of the raised portion 5 of the frame tlius formed there may be stretched or laid a Wering of any suitable materialthe face of which provides the top surface 6' of the plane and which extends from the front edge of the plane to the apex of the raised portion thereof.

The operation of the plane is as follows: As the plane is propelled or drawn through the air. the air will strike the concave surface (3 of the plane and beconie impelled upwardly over the body of the plane lying back of said surface. This tends to form a partial vacuum above the plane back of the surface 6 which will increase the lifting efficiency of the plane by reason of the lifting influence of the air beneath the body of the plane seeking to fill the partial vacuum thus formed.

Having thus fully described in inventioin I claim and desire to secure by letters Pair out of the United States;-

I. A plane for aeroplanes having a concarc top surface located in the forward part of the body of the plane and presenting a general upward and baclm'ard inclination with relation {0 the entering: edge of the plane whereby air striking said surface durthereof. Over the frame thus formed there ing the operation of tho plane \vi'il be imyelled upwardly tuproduee a rarefieation of i air above the body of said plane lying hack of said surface.

2. A plane for aeroplanes having a con cave top surface lecated in the forward part of the body of the plane and presenting a general upward and backward inclination from the entering edge of the plane whereby air striking sail surface duringthe operalion 0f the plane will be impelled u m'ardly 10 to produce a rarefication of air above the body of said plane lying back of said sur face.

v v JAMES b. LANG.

' Witnesses J 01m 1t. HAYES, M. E. FLAHERTY. 

